Electric-lamp socket.



` MJ'LARSEN. I ELECTRIC LAMP SOCKET. l APIVLIOATION lFILED JAN. 18,1908.

1,109,589'. Patented sept.1,1'91.4.

INVENTOR MHTNESSES;

UNITED srA'rEs PATENT OFFOE MAGNUS LAEsEN, or NEW Yoann. Y., Assrenon ore HESPE, E JERsEY CITY, NEwT ONE-HALF To FREDERICK F. JERSEY.

' ELECTRIC-LAMP sqocKE'i.

Specification of Letters Patent.

Patented Sept. 1, 1914.

Application ined January is, 190s. serial No. v411,456.

electric light fixtures.

It has for its object toy provide an ad- Vv-justable socket for electriclamps, which shall be so constructed as to allow of a rais'- ing orlowering of a lamp attached, and of setting saine at many and varyingangles to a base supporting the adjustable .socket and firmly h eldin's'uch-fposition. lHeretoifore, when ve' -;ct iic lamp sockets of thecharacter described were thus to be adjusted, recourse had vto be had toextra constructed devices, such as swing joints or fittings,"

which either were at best diliicult to'wire or else would wear and chateand expose the wires and also add to the expense oi' the fixture.

rlhe elimination of such joints with. their undesirable features is theaim ofthe presentinvention. To accomplish this I construct a socketcover in a new and novel way, which briey described is as follows:

1A tubular sleeve adapted to receive and retain in place an insulatedelectric -lamp base receptacle with contacts, said tubular sleeve, whichmay be about the length of the usual electric lamp socket without itscap., has at the end opposite the lamp base entrance two lateral membershaving circular or annular hollow spaces facingV each other internally,a short distance apa-rt, in a parallel plane perpendicular to thetubular sleeve and space. Said members vrotatively mounting andinclosing in said annu-l lar or circular space an annular or circularcentral member carrying means for attaching same member to a desired.base or tixture, and all the parts are so arranged, thatA the lateral-members with the lamp attached may be bodily rotated or turned ,uponsaid central member, and the lamp be thus presented and firmly supportedat many and varying angles to its base. All without injury to theelectric circ-uit contacts.

As a better underst riding of the adjustable socket will be had from adetailed -de- `scription of a practical.embodiment thereof`ticalsectional view of Fig. 'center at right angle with'same.

u n u 7 such description will now be given, reference being' had to theaccompanying` drawings in which:

Figure l is anelevation of the adjustable socket. Fig. Q is anelevational view of Fig. 3 at .right angle with same. F ig.

3 is an elevational side view of Fi@ through the center with centralmember left out.- Figs. 4: and 5 are vertical sectional views of thecentral member taken one at right angles to the other. Fig. 6 is a ver-2 through the n Fig. 7 is same as-Fig. l but with1 a somewhatdifferent'construction. Fig. 8 shows members ik and B in a. verticalcentral sectional view and an inclosed porcelain base in elevation... j

Fig. 9`shows a preferred type of a porcelain base. 4

Similar letters. refer jto similar parts throughout the several views.The adjustable socket cover as shown in F J. consists of three separateparts or members, two lateral members or paits A and one central memberor part B. The twolateral members A are identical with each other, as ifmade from a single die or mold, so the description of one of the mein4bers A will be the same as that of thev other. The one end of thelateral member A, which is to receive or cover the lamp base receptacle,is so formed, that when the said two lateral members A are united, theypresent a cylindrical or tubular sleeve in shape` and sizepreferablysimilar to such parts of the commonly used electrical lampsockets, that incloses or covers the porcelain-base with its lampreceptacle. This 'end of the inembers A is therefore semi-tubular orsemicylindrical. At the end opposite the lamp entrance the member A.merges into a hol` low form," which may be .hemispherical or ot r shape.The internal .face ot' this part of member A is annular or circular, andits edges formed into an annular or circular guideway, intended to.receive an annular or circular member B. This guideway, is shown inthesectional view Fig. 6 as a short yextending flange situated a shortdistance from the internal edges of the semi-tubular slee-'ve andove-rlapping'the member B as is shown in Fig. l. I do not, however,limit myself to the particular form of the guideway as I am aware thatvarious changes *Ordinary Caps lor the eectri (Y malin-ler a' w. 1 i),:um

.herir being1 ale@ provided throughout Wim ,insulating meierial Yadapecl in sliegeancl exrent te Jhe entire member and -riiily held iiiplace by mea-a5 of a Small me busi ing; P as shown in 6 er may be alsoeher- Wise helil. Said insulating; material nel; extending fur# er,however, in the annular or Circuler par@ ef. member .Eri liaii 'ge gleeCircular er aiiriiilzr:V ggiiicleWa-y Shown in Fig. 6.A 'The ceiraralpart .l consists of am annular or. Circuler member aflapecl fee theguieeways er the memii'm" thai i einen' circular or 'annular bers A,when ih posit-i011., in Such a "the members A may be bellily rele? .A

said member E A nozzle C simil-er te iheii't and impose as the.

is rigidly ataC-ecl te Sad .ric

nozzle' may be casi as part L or also fastened iii the marmer shawn liiiFig or with :i screw mit D as shown iii which may be soldered le themember B 0.1: Otherwise held. It slieulcl be iiolieecl that `the Screwhreailecl part of the nozzle does not extend through ehe ring', a plainspace is left as itpaeses through Same and is intendefl lo allow' bodilyrotation of the entire socken' upon said nozzle means be- .ing had telimit the turning mevemeii to the Circle. Au opening is' had througheiithe nozzle C an@ member B for `the passagev of electric Wiringlrl le theinelosed lamp base Contacts. This member l, preferablj.y :i ring asshown iii the il 'awiiige inercler t e i'iillyT insulie. may be providedwith r fiber ring l] internally, er Geller insulating for and 'passageer maier'al with opening 'the electric Wiring.

liilwig. S is shown *alie Several paris. Vllllie member :incl the remy lber are Sherrie, in a verieal eeiiral see lionel View amil "alleiiielosed pereelaiiil-base with its lamp-receptacle attached inelevetieii. Ari axial red v1"",passing; "lireugli lie members il. mici lSerres to bind 'the said.

members tegeth'er and else le rela, he elecrie lamp in any of is desiredpesloieiis by means of the thmiibnus lll lllashers F being iucerpoedbetween these 'said Jmml nuts angl members A le. vili'ale theeperaliioii ef rire' aljuela, eii.4 Said arial rofl S is, however. neig'el miel, 'it ierely is where speeizel security ie ieeele marilgY bedispensed Willi, @The fl may be iiisilrllerl :is shGwzi by il. perceaiinbase traerse by e r channel il., Lhreuglr die eerrer :nel haring'grooves ,i eine ef' same 'for Lelle e wires, ie sha n iii Figs. grewe 0Serres an insularien lier the iiular elgeg of the member E,

wh 4ie leare be annular edges er guidew' me members .er and as@ Seri-esto rY Y place lie liber,ringj 'L of member B.

-Tlie lies er Said chmmel U being parallel le each the tubular sleeveaStruclienyle lli *ee roatieii of the other and parallel te the metion oflele-ral members A fm die tubular ring l5, rIlle Channel serre also thepurpose of preveiitii n iiioi'eiiieut ou )are of lie' porcelain betelarme lre iiiseri'oii of arr screw threaded meeleelrie lamp "iiilze thesaid. porcelallie sleeve rigidly a'taeheal "0 lain bue. ing in ihr usualor er places and s soulierl re their eonbact al by the usual meme.

l :i elige/lilly medilied ferm er lie a ljimab socket eeiigistiug el tirpai-rs adapted le be seeured, te each einer Uil e x ma rical ,sleeve 1.,V M l l "i a lamp recep ziele i. er ewiger "shag a ring adaptee 1;@ slipover eral be se ire lo said eylur cli-ical. Sleeve aml havii u 'reriorl7hemispherically holloivecl members vse-lilefred otherwise rigidlyeltaelrecl lhere! Said lateral members,having 'their .in-

le, terier e@ cular gli L lar riugproi'ial' tubular iivzzle a uelesiiiger lar ring: lairl sleeve Serri :mil idea figures.

Tfhal; l ela ermerl im@ an ammlar Orrir- 1 'ller the reeepiioii el atubuiri'li a short screw flireaflecl ifreerelation 'of the en Saidiiicloseffl lubria i id cylindrical respect same purpeee described iiille other ml 'sa im is: l l. is au article mi iiiaiiiiiaelure ai;electric' lamp seele cehfisting ef lhree hem'- bers rel li, adiusalleaial held tegelher lw a rlevieefaml having' au elveniug' fer cir? e el'eleclrie aires i0 the inrierer" fl ihr-ee members?.which opening isSituated xi ille emile-r member. i'we of the wbr-ii ininolh being;lnbular inl :mel ailaigleil le receive u` 'vil-li a lamp raver-hielo andy re-v heilig nature el' lz'ellew l'iliire-al0gl-sphere ml 'w rilagrfmm''for eleatrie wires eaill perce-lain base, ille illirfl aflapeijl teoccupy lh@ bifurcation o said 'borrelaiii line-e' the elliereral' m theelf' Seid wie mw wf ille gabber em'erecl vaires pass-V e nozzle C areled as m the aller therefore, no obtric conductors tothe aforesaidporcelain base and for fastening said ring to a lixture 'by meansl ofits threaded nozzle.

As an article of manufacture an electr? laripsocket casing consisting ofthree "in rbe t, relatively adjustable, and heldjtof geteilter by aclamping device and having an opening for entrance of electric Wires tothe interior of said three members, which opening is situated in thecenter member, tWo of the said members,l when joined, being tubu- 1 larinform at one end. and adapted to receive aporcelain base with a lampreceptacle, and the other end of said tivo members being in the natureof a hollovs7 sphere, bi-'- furoatedeto receive and hold inI place thethird member, a ring, by the aid of a clampmg device in the shape of anaxial rod passing axially through said three members, and in thespherical port-ion o f same, said axial rod also lserving to hold thethree members in any position of relative adjustment.

3, Asan article of manufacture an electric lamp socket casingconsistingof three members relatively adjustable and held firmly together by aclamping device and having an opening for the entrance ofelec; tricwires which do not pass out of said three memberabut terminate Withinthem, two of the said-three members when joined being tubular in form atone end and adapted to receive a porcelain -base With a lamp receptacle,and the other end of said two members be-ing in the nature 'of abifurcated spher'e, hollo\v, to give playroom for electric Wiresentering through the third member, a

ring, 'which lring `is adapted to occupy .a space produ/ced by thebifurcation of said spherical portion of said two members, said electricWires passing through a nozzle attached to said ring and to theWireterminals of said porcelain base.

et. fis an article of manufacture an electric lamp socket, comprising aporcelain base `with a lamp receptacle and electric conductors leadingto said porcelain base, a casing to inclose said porcelain basev withits lamp receptacle and said conductors, said using consisting of threemembers rela# tively adjustable and held together' by a clamping device,two of said members when joined being tubular in forni at one endandadapted to vhold said porcelain base with.

lamp receptacle, and at the other end being in the nature of a sphere,hollow, so as to give playrooinfor electric `Wires, and bifurcated withspace for reception of the third member, a ring, upon which said twomem1 while means bers are adapted to revolve are being had in the way ofan axial rod passing axially through saidthree'members in thesphericalportion of` same and thumb nuts on ends of said axial rod to firmlyclamp said two. members at any angle of said r1ng.- l v 5. Iihecombination in a lamp socket of a. porcelain base with a lamp receptacleand Wire terminals and electrici conductors leading to said wireterminals with-:a casing to inclose said porcelain'base with its lampreceptacle and electric conductors, said casing jconsisting of threemembers relatively ad'- justable by the aid of an axial rod passingthrough said three members, and thumb nuts uponthe threaded ends lofsaid axial rod, two of the said three -members being tubular in form atone end for the reception of aforesaid porcelain base with its lamp]vreceptacle 'and electric conductors and the other end of said twomembers being inthe -nature of ahollow' bifurcated sphere adapted toinclose and revolve on the third member, la ring, said ringhaving ahollow threaded nozzle attached or integral there- With for thefastening of said ring to a ix' ture and to allow saidelectricconductors aforesaid to enter the interior of said threemembers, one conductor on each side of the interior of said ring toterminate at the terminals of said porcelain base.

6. The combination in a lampV socket of a porcelain-base with a lampreceptacle and Wire terminals and-electric conductors leading to saidWire terminals With a casing to inclose said porcelain-base with itslamp receptacle and electric conductors, said casing consisting of twotelescoping members, one

of said members being tubular in form and adapted to inclose'saidporcelain-base with its lamp-receptacle and Wire terminals', and

the other of said members being inthe nature of a hollow, annular' orglobularffbody,

the one end-of which terminates-Jin lanlgannular band or ring, adaptedto telescopeivith said tubular member and fasten thereto, and saidannular or globular body being bifurcated to provide space for arotatable ring with a hollow nozzle, said annular or globular bodyhaving space on either side of said ring, interiorly for the passage ofcloctric conductors entering aforesaid nozzle and terminating at thewire terminals of aforesaid porcelain-base.

MAGNUS LAR-SEN.

lVitnesses GEORGE LINKE, GEORGE Knonucnr..v

